Oil and water burner.



G. G. LUNDSTROM.

OIL AND WATER BURNER.

APPLICATION FILED DEG.7,1912.

1,082,755, Patented Dec. 30, 1913.

3 SHEETS-SHEET 1.

lV/TZVESSES: INVENTOR.

ATTORNEYS.

G. G. LUNDSTROM.

OIL AND WATER BURNER.

APPLI'GATION FILED no.7, 1912.

1,082,755. Patented Dec. 30, 1913.

3 SHEETS-SHEET 2.

WITNESSES: Q [NVE TOR.

k A M Q I 0 BY ATTORNEYJ COLUMBIA PLANOGRAPH c0.. WASHINGTON D c CLG.LUNDSTROM.

OIL AND WATER BURNER.

APPLICATION FILED no.7, 1912.

Patnted Dec. 30, 1913.

3 SHEETS-SHEET 3.

55 [I W 5 54 5055 36 L 5/ 52 4/ 49 4623 4 :5 t 66 F 4s 6b 45 r 67 I 29.L so 47 27 29 66 WITNESSES: v r DZVENTOR BY 54W f 7 M ATTORNEYS,

COLUMBIA PMNOORAPH CO.,WMHINGTDN. D. c.

PATEN OFFICE.

CHARLES G. LUNDSTROM, OF DES MOINES, IOWA, ASSIGNOR, BY MESNEASSIGNMENTS, TO M. MITCHELL, OF DES MOINES, IOWA.

OIL AND WATER BURNER.

Specification ofjLetters Patent.

Patented Dec. 30, 1913.

To all whom/fit mag concern;

Be it known that .I, CHARLns G. Lonn- STRQM, a citizen-0f the UnitedStates,res1ding .at .Des Moines, in the county of Polk and State ofIowa, have invented a certain new and useful Oil and WVater Burner, ofwhich ;the following is .a specification.

The object .ofany invention ,-is to provide an .oil and water burnertofsimple, durable and inexpensive construction provided with meanswhereby steam may be fed to the burner together with the oil fortherebypro-- ducing a hotter, and .clearer flame, with a minimum amount of.smoke.

A further object is toprovide .inisuc'h a de vice means for maintaininga water and steam circulation through the flame of the fire ,and forcarrying the steam generated to the burner, the parts for carnying thewaterand steam beingso arranged that thecirculation of :the steam isupwardly from the heating tube.

A furtherpbject is to provide in such a water and steam circulatingsystem, a suit able safety valve.

A further object is to provide in a :device of the class mentioned .awater and steam circulating system of ,thekind described and also anauxiliary water andesteam .circulat. ing system in which is included asafety valve.

device an automatic cut-off connected with the water circulating systemand arranged; and constructed sothatafailurein the water 5 supplyautomatically cutsoff the flow of-oil;

. portion 11 is to the burner.

ofthe furnace or stovein which thevburner is installed.

A further object is'to provide in a device of the kindanentioned, simpleand eflective' mechanism ,for automatically controlling, regulating andvarying the supply: of :water' valve 17. The inner end of the tube 16justable burner tip which may :be readily,

controlled from outside the firebox ;and

.a top or plan elevation of the :shows a front or end elevation of myoil and waterburner.

=tional view taken A further object is to provide in such a ,vide avalve 17,

which may .be readily adjusted to regulate the amount of steam fed tothe burner, said burner tip being so constructed and installed that itmay be readily removed and another burner .tip placed in position.

A further object is to provide a suitable tray for carrying a wickdevice which may be saturated with the oil used as fuel and used forgenerating steam when the burner is first started.

My invention consists in certain details, inztheconstruction,arrangement and combination of the various parts of the device, whereby.the objects contemplated are attained, as hereinafter more fully setforth, pointed out in my claims, and illustrated in the accompanyingdrawings, in which:

Figure 1 shows a side elevation of my improved oil and water burner.Fig. 2 shows same. Fig. 3

Fig. 4 shows a vertical, secon the line 44 of Fig. 3. Fig. 5 shows avertical, sectional view taken onthe line 5-5 of Fig. 4, and Fig. 6shows ;a detail view ofthe filter device in the steam passage.

In the accompanying drawings, I have aised the reference numeral 10 toindicate generally the front wall of the fire-box of a furnace. Saidwall is provided with a suit- :ableopening in which is secured by anydesired means a burner body or casting which iincludes the fiat portion11. The flat porition 11 forms a part of the front of the fur- FI'IELCG.Extending rearwardly from the flat a thicker portion or block whichlhave indicated generallyby the ref- :erence numeral 12.

I have provided a water supply pipe 13 A which divides into branches 14and 15 near the burner body. Communicating with the branch 14 is a tube16 extending through the burner body into the furnace. I propreferablyat the junction between the pipes or tubes 14 and 16, which valve iscontrolled by a hand wheel 18. An indicating dial may be used if desiredin connection with the hand wheel 18 and the communicates with a largetube 19 which I shall call the boiler. The'tube 16 and the boiler 19 arepreferably arranged so that the inner end of the boiler 19 is higherthan the end adjacent to the burner body. Communicating with the upperportion of the rear end of the boiler 19 is a pipe 20 which extendsupwardly and toward the front of the furnace where it communicates atits highest point with a vertical passage 21 in the burner body. It willthus be seen that the movement of water and steam in the furnace isalways upward. At the lower end of the passage 21 is a tube 2 extendinglaterally from the burner body and connected with the tube 22 is a tube23 which extends through the burner body into the furnace. In the tube22 is a safety valve 23. Connected with the stem of the safety valve isa lever arm 24- on which is a weight 25 which may be adjustedlongitudinally on the arm 2 f for regulating the safety valve anddetermining the amount of steam pres sure necessary to permit the safetyvalve to blow off Communicating with the lower end of the passage 21 isa laterally extending passage 26 opposite the tube 22. The passage 26communicates with the opening 27 in which the burner tip, hereinafterdescribed, is secured. A smaller norizontal passage 28 extends from theopening 27 to the outside of the burner body. Screwed into the passage28 of the burner body is a tube 29 having a hollow cylindrical portion29 extending through the passage 28 to the opening 27 and internallyscrew threaded at its inner end.

For supplying oil to my improved oil and water burner, I have providedan oil supply pipe 30 communicating with an automatic cut-off 31 whichwill hereinafter be more fully described. The automatic cut-off 31communicates with the tube 29.

Communicating with the branch 15 of the water pipe is a tube or pipe 32,extending through the burner body and communicating within the furnacewith a larger tube 33, the inner end of which is higher than its outerend. The tubes 32 and 33 form part of an auxiliary water and steamcirculation. In the branch 15 is a valve 56, the stem 57 of which ispreferably controlled by a hand wheel 58. Communicating with the innerend of the larger tube 33 is a tube 34 extending upwardly and toward theburner body. The tube 3 1 communicates with a passage 35. The passage 35communicates with a vertical passage 36. Communicating with the lowerend of the passage 36 is a short tube 37 extending laterally from theburner body. Communicating with the tube 37 is a short tube 38 extendinginto the furnace. In the tube 37 is a safety valve 38 on the stem ofwhich is a ball or weight 39. A horizontal passage 10 extends from thelower end of the passage 36 to the outer surface of the burner body.Screwed into the burner body and communicating with the passage 40 is atube e1 preferably parallel with the tube 29.

I will now describe the automatic cut-off 31 more fully. The body of thecut-off 31 is provided with a passage 4:2 which communicates with theoil supply pipe 30, and is preferably horizontally arranged. Extendingupwardly from the passage 4 2 is a passage 43, the upper and lower endsof which form valve seats 14: and 55. The valves 16 and it are arrangedto coact with the valve seats 4% and 15 and are connected by a stem 48.Above the valve seat ti is a larger opening 49 which extends to the topof the cutoff. In the top of the cut-off 31 is a plug 50. A stem or rod51 is mounted in the plug 50. In the opening 15 below the plug 50 is acollar 52 screwed into the cut-off, and between the collar 52 and theplug 50 is packing material The stem or rod 51 is slidably mounted, andabove the plug 50, is provided with an extensible coil spring 5% fornormally holding it at the upward limit of its movement. On the upperend of the stem 51 is a handle which may be in the shape of a ball. Inthe oil supply tube is a valve 59, the stem 60 of which is controlled bya hand wheel 61. It will be understood that an indicating dial may beplaced adjacent to the hand wheel 61 if desired.

I preferably provide suitable means for operating the valves 17 and 59in unison. As shown in the drawings a sprocket wheel 71 is mounted onthe stem 60 in line with a sprocket wheel 70 on the stem of the valve17, and the wheels 70 and 17 are operatively connected by a sprocketchain 72.

In the upper end of the vertical passage 21, I provide a filter 62,shown in Fig. 6, which may be of any suitable form.

Secured to the lower portion of the burner body and extending into thefurnace is a pan 63 designed to hold fuel of any kind for generatingheat when the burner is first started.

For starting fuel, I use the oil regularly used to make the fire andturn it into the pan 63 in the same manner as the oil is regularlysupplied to the .fire and this pan contains asbestos wool 63 that servesas a wick and is indestructible by fire.

Received within the tube 66 and extending across the opening 27 is aburner tip 65, one end of which is screwed into the portion 29 of thetube 29. The burner tip comprises a tube, one end of which communi cateswith the opening in the portion 29 and the other end of which extendsslightly beyond the burner body into the furnace. A tube 66, of greaterdiameter than the burner tip 65 is screwed into the opening 27 andcommunicates therewith. The inner end of the opening in the tube 66 isenlarged at 67, as shown in Fig. l, for purposes hereinafter more fullyexplained. That portion of the burner tip which is received within theopening 27 is provided with a shoulder 68.

Assuming that all the :parts are installed in .position in a furnace,and that the pipes 13 and 30 are connected with water and oil tanksrespectively, my improved oil and water burner is then ready for use.When theburner is installed, Iplace in the pan-63 some inflammablematerial such as asbestos wool, suitable to serve as a wick and tospread oil. To start the fire, I turn oil on the asbestos Wool andignite it, to heat the boiler 19 and the pipe 33. Then I open the valve17 and permit some water 'to flow into the water pipes so that steamwill begenerated. The flame from the starting fuel lights the-oil and ittakes a very short period of time to generate sufficient steam togreatly improve the flame from the burner tip. In starting the fire, thestem 'or,rod 51 is pressed down, thereby unseating the valve 47 andpermitting the oil to pass through the passages 42 and 43 and the tube29, to the burner tip. As soon as a reasonable amount of steam has beengenerated, the steam from the auxiliary circulating system passes intothe chamber 49 and holds the valve 46 down. The steam from the pipe 20passes through the passages 21 and 26 to the opening 27and then throughthe tube 66 around the burner tip at the outer end of which it mingleswith the flame of the burning oil. Up to a certain limit, I have foundthat the more steam that is mingled with the flame the betterand hotteris the flame produced. The parts may be ad justed beforehand so thatwater and oil fuel supply may be regulated together by means of thesprockets and chain above described. If there is too large-a flow ofwater ortoo great a generation of steam, water or steam passes into thefurnace through the tube 23 the safety valve 23 being opened by thepressure. An excess-of water or an excessof steam pressure in theauxiliary circulating system may be relieved through the valve 38 Shouldthe water supply stop or the steam pressure drop for any reason, the oilpressure will raise the valve 47, the bottom of which is preferablyconvex, as shown in Fig. 4, and thereby shut off the oil supply and putout the fire.

.On the lever 24, I have placed the movable weight 25 for regulating theamount of pressure necessary to cause surplus water or steam todischarge through the pipe 23, and I thereby regulate the amount ofsteam fed to the tube 66. The stem 51 is used simply to hold the valve47 open until the surplus enough steam is generated to hold the valve 46closed. The proper proportional amounts of water and oil supply beingdetermined, the flame and the resulting heat may be then regulated byoperating the hand Wheel 61.

The block 12 of the burner body is provided with an opening 75 throughwhich pliers or other instruments may be inserted for operating the tube66, or the burner tip 65 from outside the furnace. The relative supplyof steam furnished to the burner tip may be very accurately regulated byscrewing the tube 66 in or out so that the shoulder 68 is more or lesscompletely received within the enlarged opening 67 in one end of thetube 66. If desired, the tube 66 and the burner 65 maybe entirelyremoved from the burner body by means of tools inserted through theopening 75 from outside the furnace, and may be replaced or repaired.

The advantages of my improved oil and water burner are many. It is awell known fact that if steam is injected into the flame of burning oil,the flame will be greatly improved and the heat increased. By means ofmy device the amount of water supply can be accurately regulated and therelative amount of steam fed to the burner tip may be accuratelycontrolled. The steam is filtered before being fed to the burner tip andany excess of steam or water is disposed of by means of the safetyvalves in the main and auxiliary circulating systems.

By means of the auxiliary system, and the automatic cut-off, I haveprovided means whereby the failure of the water or steam supply willautomatically result in stopping the flow of oil.

The parts of my improved oil and water burner are simple and durable inconstruction. I have found that I can use kerosene, distillate oil,crude oil, or other oils by simply varying the size of the opening inthe burner tip. A steam gage may be used in connection with the waterand steam circulat-ion, ifdesired.

WV hen steam is injected into the burning oil, or fed to the flame withthe oil, it is a well known fact that a much hotter and better fire maybe secured than by burning the oil alone. By using the steam tube aroundthe burner tip, the steam is fed to the oil at all points around thedischarge end of the burner tip and I thereby secure better results thanby feeding the steam from one side. The fire produced by a steam andwater burner thus constructed gives off practically no smoke. My oil andwater burner leaves no ash or waste products.

By the arrangement of the circulating system, the movement of the steamis always upward and I am thereby able to secure dry steam for feedingto the burner tip. Special attention is called to the method of startingthe fire. The oil is simply turned on to the asbestos wool in the pan 60and lgnited. A small amount of water is turned into the circulatingsystem and steam is upwardly generated. Steam may then be turned intothe steam discharge tube and the burner may be regulated as desired. Byusing the asbestos wool, I dispense with the necessity for using wood orother kindling for generating steam for starting the burner. The sameasbestos may be used for a long time.

It will be understood that a great many variations may be made in thedetails of construction of my device without departing from theessential features of the invention and that I intend to cover in thisapplication any form of the oil and water burner which may be includedin the scope of the appended claims.

I claim as my invention:

1. In a device of the class described, a burner body having an opening,a passage for oil coimnunicating therewith, and a pas sage for steamcommunicating therewith, a steam tube adjustably and detachably mountedin said opening, the opening in said steam tube being enlarged at itsinner end, a detachable burner tip received in said steam tube andcommunicating with said oil passage, said burner tip being provided witha shoulder so arranged that by the adjustment of the burner tip beingprovided with a shoulder steam tube, the size of the passage from theopening in the burner body into the steam tube may be varied, saidburner body being provided with an opening whereby said steam tube maybe adjusted or removed and said burner tip may be removed from outsidethe furnace.

2. In a device'of the class described, a burner body having an opening,a passage for oil communicating therewith, and a passage for steamcommunicating therewith, a steam tube detachably mountedin said opening,a detachable burner tip received within said steam tube andcommunicating with said oil passage, said burner body being providedwith an opening whereby said steam tube and burner tip may be removedfrom outside a furnace.

3. In a device of the class described, a burner body designed to formpart of a furnace wall, said body having a passage for water, an openingto receive a burner tip, steam and oil passages communicating with saidopening, a boiler tube designed to extend into a fire box andcommunicating with said water and steam passages respectively, a burnertip mounted in said opening to communicate with said oil passage and ofsuch size as to allow steam to pass from the steam passage through saidopening around said tip.

4. In a device of the class described, the combination of a burner body,a burner mounted therein, an oil supply pipe communicating with saidburner, a water and steam circulating system for discharging steamadjacent to said burner, an auxiliary water and steam circulatingsystem, a cutoff in said oil supply pipe operatively connected with saidlast system for holding said cut-off open when the steam pressure insaid last system is above a certain point, said cut-0E being arranged tonormally stand in closed position.

5. In a device of the class described, a body having an opening toreceive a burner, an oil supply passage, a steam passage communicatingwith said oil passage, a second steam passage, a water and steamcirculating system communicating with said first steam passage, an oilsupply pipe communicating with said oil passage, an auxiliary water andsteam circulating system extending into the furnace from said body andcommunicating at its highest point with said last described steampassage, an automatic cut-01f in said oil supply pipe, said auxiliarywater and steam circulation being operatively connected with saidcut-off for shutting off the oil supply, if for any reason the steampressure therein should go down, said burner body furnishing a supportfor the parts above described and being designed to be detachablymounted in the Wall of the furnace.

6. In a device of the class described, a burner body, comprising aportion designed to form part of a furnace or stove wall, and a blockportion, said block portion being provided with an opening extendingthrough it, and with an oil supply passage communicating with saidopening, said block being also provided with a second opening wherebyaccess may be had from outside the furnace to a burner tip extendingfrom said opening into the furnace, a steam tube received in said firstopening and designed to extend into a furnace, a burner tube received insaid steam tube and extending beyond it into said first opening and.communicating with said oil supply passage, said burner tube beingprovided with a shoulder within said opening, said steam tube beinglongitudinally adjustable, and having an enlarged opening in its endwithin the opening in the burner tube designed to coact with saidshoulder for regulating the size of the passage from the opening in saidhead into said steam tube.

7. In a device of the class described, a burner body, a burner tipconnected therewith, means for supplying fuel through said burner bodyto said tip, a main circulating fuel either upon a failure of the Wateror 10 system connected with said body, means for steam supply to theauxiliary circulating supplying Water thereto means for connectsystem.

ing said system With said burner tip, an Des Moines, Iowa, November21,1912. auxiliary circulating system, means for su plying Waterthereto, and an automatic cu t- CHARLES LUNDSTROM' ofi arranged in thepath of said fuel supply Witnesses:

and designed to be operated from said aux- M. VVALLAGE,

iliary circulating system for cutting off the S. ROBINSON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. 0.

